Best Computer Uninterruptible Power Supply Units (2026 Guide)
We evaluated units by aggregated user rating, number of reviews, presence of battery-backup plus surge protection, outlet configuration, and clear battery-replacement options
This guide covers top-rated computer uninterruptible power supply (UPS) units and closely related battery-replacement options, selected for high user ratings and substantial review volume. Picks emphasize reliable battery backup, surge protection, and common desktop features to help protect PCs and networked peripherals
Top Picks
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1
APC BE600M1 Back-UPS 600VA 330W with USB Charger
Compact UPS with 600VA/330W battery backup, 7 outlets incl. battery-backed and surge-protected, plus a USB charging port. Customers note reliable power and easy setup, with mixed opinions on battery life during outages
- 600VA/330W capacity
- 7 outlets including battery backup
- USB charging port
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2
APC RBC123 replacement battery for select APC UPS models
APC RBC123 replacement battery cartridge restores original UPS performance. Compatible with BR1000G, BX1350M, BN1350G, BX1000G, BX1300G and select models. Customers report easy installation and good value with near-full charge on arrival
- compatible with multiple APC UPS models
- easy to install
- near-full charge upon arrival
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3
CyberPower 425VA Standby UPS with 8 outlets
Compact standby UPS with 425VA/260W capacity and 8 outlets for computers, gaming consoles, and routers. customers note good value and compact size, with some reports of loud continuous beeping
- 425VA/260W standby UPS
- 8 NEMA 5-15R outlets
- LED power-on and wiring fault indicator
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4
APC BE550G UPS Battery Backup with Surge Protector
APC BE550G provides 550VA/330W backup power with 8 outlets, including 4 battery-backed and 4 surge-only. Includes ethernet dataline protection and a 5' power cord for desktop setups. Buyers note reliable setup and value, with mixed reviews on battery life and shutdown frequency
- 8 outlets with mixed backup/protection
- ethernet dataline surge protection
- PowerChute management port
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5
APC BE650G1 UPS Battery Backup with Surge Protection
APC BE650G1 provides 650VA/390W battery backup and surge protection with 8 outlets and a data line protector. Customers note reliable power during outages and easy setup, though some report battery issues over time
- 650VA/390W backup power
- 8 outlets with 4 UPS + 4 surge-only
- dataline Ethernet protection
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6
APC RBC17 Replacement Battery for select APC UPS models
Replacement battery cartridge for APC UPS models, restoring performance to original specifications. Customers find it fits well, easy to install, and a solid value, though charging performance varies by unit
- genuine APC replacement battery
- compatible with several APC UPS models
- restores original UPS performance
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7
APC RBC Replacement Battery for UPS Models
APC Replacement Battery Cartridge (RBC) compatible with select APC UPS models. Restores original performance and is pre-charged for immediate use. Customers note easy installation and good fit, with value for money; some report variable battery life
- compatible with multiple APC UPS models
- pre-charged and ready to install
- certified compatibility to original specifications
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8
APC 425VA UPS Battery Backup Surge Protector BE425M
Compact UPS with 425VA/225W battery backup and surge protection. Includes 6 outlets, 5' power cord, and wall-mount option; battery not user-replaceable but serviceable. One customer insight notes mixed battery life and alarm volume
- 425VA/225W battery backup
- 6 outlets with mixed backup and surge
- wall-mountable, 5' cord
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9
CyberPower 700VA/370W Standby UPS with 8 outlets
Compact standby UPS with 8 outlets for computers, gaming consoles, and routers. Delivers simulated sine wave protection for short outages. Customers note good functionality and value, though battery life and alarm beeping are concerns
- 8 outlets including backup and surge protected
- slim profile footprint
- wide-plug outlet spacing
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10
CyberPower 625VA Standby UPS with 8 outlets, USB charging
Compact standby UPS with 8 outlets and 2 USB charging ports protects computers, gaming consoles, and routers with simulated sine wave output. Customers note compact size and functionality, though battery life and alarm beeps receive mixed feedback
- 625VA/360W capacity
- 8 NEMA 5-15R outlets
- 2 USB charging ports